Ocean

A new species of comb jelly was identified in a deep trench near Puerto Rico.

The Chinese submarine Fendouzhe has completed a months-long expedition to the deepest part of the ocean, a feat matched by only James Cameron, a hobbyist investor and the U.S. Navy.

Before we start mining for precious metals in the darkness of the deep sea, we might try switching on the light first and observing our surroundings.

Researchers found and measured a group of rare Bigfin Squids congregating off the Australia coast for the first time ever.

When mantis shrimp find a burrow that's just right, they'll fight brutal battles to steal it.

Scientists have discovered a free-standing reef near Australia's Great Barrier Reef, which stands taller than the Empire State Building.

A new report finds that microplastic debris is twice as abundant in the deep ocean as it is on the sea surface.

A new study evaluates massive Megalodon alongside all sharks in the lamniform group — living and extinct. Even among its extinct relatives, Megalodon was unequalled in length and mass.

A seven-armed octopus unexpectedly washed ashore on Whidbey Island, Washington, even though these cephalopods aren't native to the area.

However, one expert says we need more proof these organisms actually eat viruses.

A newly described supergiant species of "sea bug" — a marine arthropod known as an isopod — was recently discovered in the Indian Ocean.

The microbes had been dormant below the ocean floor for eons, buried since the time of the dinosaurs. Then a team of scientists in Japan woke the little organisms up.

Scientists have identified the larvae of one of the world's biggest fishes — the bump-head sunfish (Mola alexandrini) — and the youngster is ridiculously tiny.

Great white sharks are fierce hunters. But as juveniles, their diets involve way more bottom-feeding than hunting large prey.

The most stunning sights from under the waves

The octopus was found miles beneath the ocean surface.

Nearly 600 hydrothermal chimneys jut from the ocean bottom on a ridge near the Pacific Northwest's coastline, scientists recently discovered.

Scientists developed a new method for preparing rock samples that revealed new species of marine microbial life below the seafloor.

Underwater explorers found a 150-foot siphonophore — a stringy creature that, like coral or jellyfish, is made up of smaller critters — living in waters off the coast of Australia.